Pop superstar Katy Perry is about to take her hit song “E.T.” to a whole new level—literally. The singer is set to join a six ...

American pop star Katy Perry is set to “shoot across the sky” this spring when she lifts off as part of a six-member, ...

Seven planets will be briefly “visible” in the evening sky Friday night, but the best chance to see as many as four planets ...

Pop star Katy Perry is set to "shoot across the sky" this spring when she lifts off as part of a six-member, all-female crew ...

Two Mars gravity assists are expected, and NASA astronauts Suni Williams and Butch Wilmore are finally set to come home from an extended stay on the International Space Station. Here are five space ...